Nanometer is a unit of length, and the symbol is nm.1nm =1nm = 10 angstrom (billionth of a meter), which is about the length of10 atoms. Suppose that a hair has a diameter of 0.05 mm and is divided into 50,000 hairs radially, and the thickness of each hair is about 6544. It is a brand-new technology to study the motion laws and characteristics of electrons, atoms and molecules in the scale of 0. 1~ 100 nm. In the process of studying the composition of matter, scientists have found that dozens of countable atoms or molecules separated on the nanometer scale show many new characteristics, and the technology of manufacturing equipment with specific functions by using these characteristics is called nanotechnology ... The main differences between nanotechnology and microelectronics technology are: nanotechnology studies the realization of specific functions of equipment by controlling individual atoms and molecules, and works by using the fluctuation of electrons; Microelectronics technology mainly realizes its function by controlling the population of electrons and works by using the particle nature of electrons. The purpose of people's research and development of nanotechnology is to effectively control the whole micro-world ... Nanotechnology is a comprehensive discipline with strong cross-cutting, and its research content covers the vast field of modern science and technology, 35438+0993. The International Steering Committee of Nanotechnology divides nanotechnology into six sub-disciplines: nanoelectronics, nanophysics, nanochemistry, nanobiology, nanoprocessing and nanometrology. Among them, nano-physics and nano-chemistry are the theoretical basis of nano-technology. Nanoelectronics is the most important content of nanotechnology. The meaning of nanotechnology -2 nanotechnology is actually a technology that uses a single atom and molecule to make substances. Judging from the research so far, there are three concepts about nanotechnology. The first one is a kind of molecular nanotechnology proposed by American scientist Dr. drexler in his book "The Machine of Creation" in 1986. According to this concept, we can apply the machine of combining molecules, so that various molecules can be combined at will. Any kind of molecular structure can be made. The nanotechnology of this concept has not made significant progress. The second concept defines nanotechnology as the limit of micromachining technology, that is, the technology of artificially forming nano-sized structures through nano-precision "machining". This nano-scale processing technology also makes the miniaturization of semiconductors reach the limit. Even if the existing technology develops, it will eventually reach the limit in theory. This is because if the line width of the circuit is reduced, the insulating film forming the circuit will be extremely thin, which will destroy the insulating effect. In addition, there are problems such as fever and shaking. In order to solve these problems, researchers are studying new nanotechnology. The third concept is put forward from a biological point of view. It turns out that organisms have nano-scale structures in cells and biofilms. The so-called nanotechnology refers to a brand-new technology to study the motion laws and characteristics of electrons, atoms and molecules in the scale of 0. 1~ 100 nanometers. In the process of studying the composition of matter, scientists have found that dozens of countable atoms or molecules separated on the nanometer scale show many new characteristics, and the technology of manufacturing equipment with specific functions by using these characteristics is called nanotechnology. Nanotechnology is a comprehensive subject with strong cross-cutting, and its research content involves the vast field of modern science and technology. Nanotechnology now includes nanobiology, nanoelectronics, nanomaterials, nanomechanics, nanochemistry and other disciplines. From micro-technology including microelectronics to nano-technology, human beings are getting deeper and deeper into the microscopic world. People's understanding and transformation of the micro-world has reached an unprecedented height. Qian Xuesen, a famous scientist in China, also pointed out that the structure around nanometer and below nanometer is a key point in the next stage of scientific and technological development, which will be a technological revolution, thus causing another industrial revolution in 2 1 century. Although there is still a long way to go before the application stage, due to the extremely broad application prospect of nanotechnology, developed countries such as the United States, Japan and Britain attach great importance to nanotechnology and have made research plans to study the characteristics of nano-electronic devices. The performance of electronic devices manufactured by nanotechnology is much better than that of traditional electronic devices. The working speed of nano-electronic devices is 1000 times that of silicon devices, so the product performance can be greatly improved. Low power consumption. The power consumption of nano-electronic devices is only 65,438+0/65,438+0,000 of that of silicon devices. There is a large amount of information storage, and at least 30 books of Beijing Library can be stored on a 5-inch CD less than the size of a palm. Small size and light weight can greatly reduce the size and weight of various electronic products. Nano-material "grumpy" nano-metal particles are flammable and explosive, such as copper particles or aluminum particles of several nanometers. When it meets air, it will produce violent combustion and explosion. Therefore, the powder of nano-metal particles can be used to make high explosives, and the solid fuel made of rockets can produce greater thrust. Using nano-metal particles as catalyst can accelerate the chemical reaction rate and greatly improve the yield of chemical synthesis. Nano-metal blocks can withstand pressure and tension, and the strength of metal nano-particle powder is ten times higher than that of ordinary metal. It can be stretched dozens of times. When it is used to make airplanes, cars and ships, its weight can be reduced to one tenth. Nanoceramics are both rigid and flexible. Nano-ceramics made of nano-ceramic particle powder are plastic, which has brought a revolution to the ceramic industry. When nano-ceramics are applied to engines, cars will run faster. The plane will fly higher. The colored nano-oxide particles of nano-oxide materials can quickly change color under the irradiation of light or the action of electric field. It is perfect to use them as glasses for soldiers to protect laser guns. The billboards made of nano-oxide materials will become more colorful under the action of electricity and light. Nano-semiconductor materials can emit various colors of light and can be made into small laser light sources. It can also convert the absorbed light energy into electric energy. Solar cars and houses made of them have great environmental protection value. Various sensors made of nano-semiconductors can sensitively detect the changes of temperature, humidity and atmospheric composition, and will be widely used in automobile exhaust monitoring and atmospheric environment protection. Nano-drugs treat patients and save lives by combining drugs with magnetic nanoparticles.
What is the nanometer unit?
For some time, nanotechnology has appeared frequently in the media, and the advantages of nanotechnology, nanomaterials and products manufactured by nanotechnology have also been widely publicized. So, what is nanotechnology? This paper introduces this knowledge for beginners' reference.
. Nanometer is the unit of length, and the symbol is nm. 1nm =1nm = 10 m (billionth of a meter), which is about the length of10 atoms. Suppose that a hair has a diameter of 0.05 mm and is divided into 50,000 hairs on average in the radial direction, and the thickness of each hair is about 1nm.
. 1, the meaning of nanotechnology
The so-called nanotechnology refers to a brand-new technology to study the motion laws and characteristics of electrons, atoms and molecules in the scale of 0. 1~ 100 nanometers. In the process of studying the composition of matter, scientists found that several or dozens of countable atoms or molecules isolated on the nanometer scale show many new characteristics, and the technology of manufacturing equipment with specific functions by using these characteristics is called nanotechnology.
The main differences between nanotechnology and microelectronics are: nanotechnology studies the realization of specific functions of equipment by controlling single atoms and molecules, and it works by using the fluctuation of electrons; Microelectronics technology mainly realizes its function by controlling the population of electrons and works by using the particle nature of electrons. The purpose of people's research and development of nanotechnology is to achieve effective control of the entire micro-world.
Nanotechnology is a comprehensive subject with strong cross-cutting, and its research content involves the vast field of modern science and technology. From 65438 to 0993, the International Steering Committee of Nanotechnology divided nanotechnology into six sub-disciplines: nanoelectronics, nanophysics, nanochemistry, nanobiology, nanofabrication and nanometrology. Among them, nano-physics and nano-chemistry are the theoretical basis of nano-technology, and nano-electronics is the most important content of nano-technology.
.2, the characteristics of nano-electronic devices
The performance of electronic devices manufactured by nanotechnology is much better than that of traditional electronic devices.
The working speed is fast, and the working speed of nano-electronic devices is 1000 times that of silicon devices, so the product performance can be greatly improved. Low power consumption, the power consumption of nano-electronic devices is only11000 of that of silicon devices. There is a lot of information storage. On a 5-inch CD less than the size of the palm of your hand, you can store all the books of at least 30 Beijing libraries. Small size and light weight can greatly reduce the size and weight of various electronic products.
For some time, nanotechnology has appeared frequently in the media, and the advantages of nanotechnology, nanomaterials and products manufactured by nanotechnology have also been widely publicized. So, what is nanotechnology? This paper introduces this knowledge for beginners' reference.
. Nanometer is the unit of length, and the symbol is nm. 1nm =1nm = 10 m (billionth of a meter), which is about the length of10 atoms. Suppose that a hair has a diameter of 0.05 mm and is divided into 50,000 hairs on average in the radial direction, and the thickness of each hair is about 1nm.
. 1, the meaning of nanotechnology
The so-called nanotechnology refers to a brand-new technology to study the motion laws and characteristics of electrons, atoms and molecules in the scale of 0. 1~ 100 nanometers. In the process of studying the composition of matter, scientists found that several or dozens of countable atoms or molecules isolated on the nanometer scale show many new characteristics, and the technology of manufacturing equipment with specific functions by using these characteristics is called nanotechnology.
The main differences between nanotechnology and microelectronics are: nanotechnology studies the realization of specific functions of equipment by controlling single atoms and molecules, and it works by using the fluctuation of electrons; Microelectronics technology mainly realizes its function by controlling the population of electrons and works by using the particle nature of electrons. The purpose of people's research and development of nanotechnology is to achieve effective control of the entire micro-world.
Nanotechnology is a comprehensive subject with strong cross-cutting, and its research content involves the vast field of modern science and technology. From 65438 to 0993, the International Steering Committee of Nanotechnology divided nanotechnology into six sub-disciplines: nanoelectronics, nanophysics, nanochemistry, nanobiology, nanofabrication and nanometrology. Among them, nano-physics and nano-chemistry are the theoretical basis of nano-technology, and nano-electronics is the most important content of nano-technology.
.2, the characteristics of nano-electronic devices
The performance of electronic devices manufactured by nanotechnology is much better than that of traditional electronic devices.
The working speed is fast, and the working speed of nano-electronic devices is 1000 times that of silicon devices, so the product performance can be greatly improved. Low power consumption, the power consumption of nano-electronic devices is only11000 of that of silicon devices. There is a lot of information storage. On a 5-inch CD less than the size of the palm of your hand, you can store all the books of at least 30 Beijing libraries. Small size and light weight can greatly reduce the size and weight of various electronic products.
What is the nanometer unit? What concept?
Nanometer, like centimeter, decimeter and meter, is a unit for measuring length. One nanometer is equal to one billionth of a meter. Putting a nanometer object on a ping-pong ball is like putting a ping-pong ball on the earth.
Experts explained that "nano" means nano, which is usually expressed by "nm". In physics, nanometer is the unit of length; 1 micron is one thousandth of a millimeter, and 1 nanometer is equal to one thousandth of a micron, which is equivalent to one thousandth of a hair.
Its conversion relationship with the length unit meter is: 1 nanometer = 10 minus 9 meters. In contrast, if the ratio of 1 m is the diameter of the earth, then 1 nm is about 1 the diameter of glass beads.
The so-called "nanotechnology" is a high-tech that studies and utilizes the structure, characteristics and interaction of atoms and molecules on the scale of 0. 1~ 100 nm. "Nano-micromanipulation" is an important content of nanotechnology, and its purpose is to move, shape, depict and assemble nano-materials according to people's wishes on the nano-scale.
Nano-micromanipulation began in the 1980s.